package org.example;

/**
 * @author ${USER}
 * @date ${DATE} ${TIME}
 * @apiNote
 */

public class Main {
    public static int mod = 1000000007;

    public static void main(String[] args) {


    }

    static class Seq implements Runnable{
        private final int index;
        public Seq(int index) {
            this.index = index;
        }


        @Override
        public void run() {

        }
    }
}